1The pads can relieve pain and effectively prevent swelling when it is used in cold compress therapy. 2Through hot compress therapy, it can dilate local capillaries, accelerate blood circulation, reduce pain and eliminate fatigue. 3With its soft plush inside, it can be used easily without towel or cloth wrapping. 4It can be used not only on the head, but also on the knees, wrists, elbows and so on. 5Easy to use, just apply the gel pack to the affected area to immediately relieve migraine.